Teat-cup.



dit"

VStute ci? Culiforniu,

HERMAN A. KRIGKE,

CF SHOWS LANDING, CALIFORNIA.

TEAT- CUP.

Speciicetion of Letters Patent.

Patented, July' 3, 1917.

Application filed May 20, i916. Serial No. 95,79).

To cli whom t flung; concern:

Re it known thut I, 'HERMAN Kiucrin, u citifien t `the United States,residing et (licnvs '.[iuiiding1 in the county of Stanislaus, haveinvented certain new und useful improvements in Teatups; und I dodeclare the following to be a iull, cleur, und exact description of thesume, reference being had to the accompanying drawings., und to thecharacters of reference marked thereon, which form ai part of thisepplicution. Y A i This .invention relates to improvements in tout cupsused in connection` with milking machines and is particularly adaptedfor use in connection with a type of milkingr machine shown in thepatent to Sherples, Nu1nber 1.014671., being the type whereinthere is unalternate pressure and suction against the tout. My improved cup islikewiseespe ciully designed `for use in connection With the automaticvacuum control ineens set forth :nmy application Serial `Number Win81...tiled .April 10th, 1916, andthe con ti l` 'vulve shown in my applicationSerial Lher 16,877, iled Mai'chfth, 1915.

i mein object of my invention is to de s. tout `cup for cooperation withthe shove entitled structures which will have e three point squeezingcontacty with the tent, 'which squeezing contact Willbe commencedagainst the top of the bestond gradually continued downwardly alon thelength. of lthe seme., such squeevzing geinig made of course prior tothe suction against the tout occasioned by the vacuum control ineunsin-Vdicnted above.

I further eim to produce u tent cup ot n much better :irren ement thanthose now commonly used un( one which has viii-ions in uis :forovercoming the disuclvuntuges :incl di utilities `enlcountered hy 'toutcups now commonly used. By having `the three point pressure in p1:forming the squeezing opcrizu tion this gives un evenly divided undei'- '.i?et:tii :"esq1ie ing along the length of' the tout common in.those tout cups e iii-ou: the topto the bottoni oi' .ly iinln'ovcdsqueezing opciution will, he inuch more like the i'iuturcl hond on thaneen he produceifl hy W in use.

. Y c, u. y tout cup no to produce e, simple und inexpensive device`Which is the pressure pipe having n longitudinal groove 3 cooperatinginch hotter thun the onesifleil lil ot the tulre l? und still. furtherobject oli thc invention isA und yet one which will be exceedinglyeffective for the purposes for which it is designed.

These objects I accomplish by mennsof such structure and relativelirmingenient of parte es will fully appear hy a. perusal of thefollowing specification und claims.

In the drawings similar characters of rei',- erence indicatecorresponding parts in the several views.

Figure 1 is a sectional view of the teat cup complete.

Fig. 2 is n sectional View ou e line X-X of Fig. 1.

Fig. 3 is nsectionul view of the tout cup showing the el sition it.would 1. just es the pressure was .first applied to it, the dotted linesshowing'the position which it would assume utter "funde its completesqueezing inove* it had ment.

Fig. 4; is a top pluriYL view of the sfpieczing tube showing how ituppcurs when it is nieking the-.three point squeeze.

Fig. 5 is e top pluri View of the complete tout` cup.

Fig. 6 is u detached View ot the retuining cli i lteferring now moreparticularly to the characters of reference on the drawing, the numerall designates the outer metallic cusin o the tent cup communicating with2, the casing 1 with the pipe 2 and terminating 1n an unnulnr groove 4:inwthe upper end of the casing 1. l

The casing 1 has :in outwardly projecting annular flan c 5 at its upperend adopt-ed to receive the :inge (3 on the inner el tulle 7, such tube7 likewise having :it its-lowx-ir curl un inwurdly projecting annulerlungc 8. The numeral 9 desigrmtcs the vacuum or suction tube whit-,lihas on its upper end u retaining flange 1U which extends within thetulle i und is adapted to clump the flange S 'against the bottoni of thecasing l, this clamping opcrution being performed by u, loci: nut 1lmounted on thc thi-ended portion hcuring sguinst the hot'- tom of theseid cusing l to drow the iizingc l0 ugeinst the [lungo H to neuke u.tight joint. A. nictul Washer i3 rests on. the top lzice of. the 'l'lige (i und u centi-ul orificcd disk 14 rests on the top oi the wushcrlil, the diurnetei of the orifice oli the disk li being less ic pressuretuhe in the po-H..

` 55 another lamination 25.

than the diameter of the tube 7 andv washer 13 for the purpose ofengaging theuppcr edge of the tent in order to hold the teat cup inposition. The members (i, 13 and 1l are all clamped together in thefollowing manner, viz:

The numeral 15 designates a central oriliced washer having a dou'nwardhTprojecting fiange 16 on its edges. This fiange. 16

14 and is clamped in that position by means of small channel-shapedclips 17 which fit around the parts 5, 16 and 15 as shown.A The vinneredges of the top sides of these members 17 are provided with small halfround grooved flanges 181 ln the topsurface of the member 15 is a halfround annular groove 19. Vhen the parts 17 are clamped over the arts asshown the groovcd members 18 aline with the groove 19 and a round Wire20 is then turned mto said grooves with its free ends, as at 21,terminating under one of the members 17. This ring 19 then acts to lockthe members 17 to the member 15 and these members 17 hold all thedescribed parts clamped together as is apparent. ,y

The flange 6 of the inner elastic tube 7 will have a layer of fabric 14"molded therein which will act as a sti'ening member for said Bange. y

Over the face of the groove I provide a small wire cloth mesh screen orstrip 22 which is clamped under the flange 16 at its upper end and underthe fiange 8 at its lower end. As will be noted the tube 7 normally fitsclosely within the casing 1 and the purpose of vthis member 22 is tohold it in this close fitting position and prevent it from wrinkling orbecoming; exi-.ended rinto the groove '3. The mesh of this memberl22does not prevent air ypressure from passing through .the same forapurpose as will be noted.

The sides of the tulie7 have an enlarging taper from the upper to. thelower end of such tube and for a. short distance from the upper end thesaid tube 7 is mede of plain elastic rubber with no reinforcement, thisplain part being immediately adjacent the groove 4. Slightly below thegroove 4 I reinforce the tube 7 with one lamination 23 of .-fabric orother suitable reinforcing l material and farther down l provide anotherlamination 24 and still farther down The enlarged taper of the tubecooperating with these increasedl -laminations of reinforcing fabrictend to stiflen the sides of the tube 7 gradually from vthe upper to thelower ends thereof. When the air pressure is admitted through the tube 2and groove 3 it will therefore first influence the tube 7 at the mostelastic point immediately adjacent the groove 'l. liy reason of thisgroove 4 and the relative diameter of the tube 7 thc air pressure will.act

laps over and incloses the parts 5, 6, and i .the'invention as definedby 'side first directly against the tube 7 adjacent the groove 3 andWill split and proceed equally on each side of the groove 3 through thegroove 4. This causes three equal points of pressure against the tubeI 7which will cause it to squeeze inwardly at three points as shown clearlyin Fig. 4.

Aszindicated above the pressure first comes at the most flexible pointof the tube 7 which-is at the upper end and will then gradually workdown along the length of said tube. This will be a very evenlydistributed pressure commencing at the top and extending downwardly7and'controlled by the relative resistance of the sides of the tube dueto its reinforcement described. The action of the squeezing of thetube'7 against the teat Will effect a complete inclosure of the teatadjacent the groove 4 whereupon the controlling plunger in the automaticshut-off valve for the vacuum line will open and allow the milk to besqueezed and drawn from the teat into` the bucket. `The squeezingoperation and this suction beingcomplcted the pressure will then herelieved from the tube 2 and thereupon the plunger in the automaticshut-off' valve will close and suction willfbe applied to the tube 2.This will then cause the flexible tube 7 to be drawn back to normalposition closely fitted in the casing 1, as described.

It is of course understood that the inte rior of the tubev 7 is helddistinctly isolated from the interior of the casing 1 by means of theclamps at each end as first described.

AThe disk 14 is provided for a part of its diameter," the width of themetal washer 13, with a reinforcing fabric 14 to prevent it fromcrinkling when clamped down in the manner shown and the under face ofthe washer 15, both faces of the Washer 13, and the top face of theflange 5 are all slightly serrated to grip the rubber parts to preventthem from crinkling or rolling when clamped into position. the partsbeing truly tted in the proper position.

From the foregoin description it will readily be seen'that have reducedsuch a device as substantially ful ils the objects of the invention asset forth herein.

While this specification sets forthin de* tail the present and preferredconstruction of the device, still in practiccsuch devian tions from suchdetail may be resorted to do not form a departure from the spirit of theappended, claims.

Having thusdcscribed my invention what I claim as new cure by Letter-sPatent is:

1. A tent cup comprising an outer casing This is to insurel all anduseful and desire to sel lill provided with a longitudinal groove in itsterminating in an annular groove near the upper end thereof, a tubecommunicat ing with the longitudinal groove, andan elastic tube fittedinto the casingr and clamped at both ends to isolate the interior of theelastic tube :from the interioiof the cas-- inn', and a tubecommunicating with the lower end ofV the elastic tube.

2L A teat cup comprising a casing having a pressure inlet, an elastictube fitted within the casing and having an outlet, such tube having` areinforcement commencing at a point below .its upper end and graduallyincreasing in strength toward the lower end thereof.

3. A. teat cup comprising a casing having an inlet communicating with alongitudinal groove, such groove terminating in an annular groove nearthe upper end of the casing, an elastic tube fitted within the casing,a, reinforcement arranged within the elastic tube at a point below suchannular groove and gradually increasing in strength toward the lower endof the elastic tube,.such elastic tube being` provided with an outlet.

4. A teat cup comprising a casing havin an inlet communicating with alongitudine groove, a porous strip fitted over the longitudinal groove,and van elastic tube fitted in the casing and having,r an outlet.

In testimony whereof I affix my signature.

HERMAN A. KRICKE.

